I think he's a very good manager and glad to see him leave The Championship.
That Luton team has been punching above their weight massively for some time now and most of the credit should be shown to Nathan Jones.
I know he went to Stoke and didn't do a great job - but I take that as a pinch of salt. Stoke at the moment are in turmoil and a lot of good managers have gone there and failed. I think Stoke are rotten to the core. Alex Neil is one of the best managers in this division and even he is finding it a very tough job.
Not sure if Jones is the right appointment for Southampton at the moment as they need to stay up and he's never manager in the PL before, but if given time, it could be a very clever appointment as even if they go down, if given the backing & resources, he would have them challenging back for promotion, of that I have no doubt.